<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
    <link href="mui/mui.min.css" rel="stylesheet" />
    <script src="mui/mui.min.js"></script>
    <style type="text/css">
        #bcid{
            width: 100%;
            height: 100%;
            position: absolute;
            background: #000000;
        }
        html, body ,div{
            height:100%;
            width: 100%;
        }
        .fbt{
            color: #0E76E1;
            width: 50%;
            background-color: #ffffff;
            float: left;
            line-height: 44px;
            text-align: center;
        }
    </style>
</head>
<body>
<header class="mui-bar mui-bar-nav" style="background-color: #ffffff;">
    <a class="mui-action-back mui-icon mui-icon-left-nav mui-pull-left"></a>
    <h1 class="mui-title" style="color: #0E76E1;">物品二维码扫描</h1>
    <span class="mui-icon mui-icon-spinner-cycle mui-spin mui-pull-right" id="turnTheLight"></span>
</header>

<div id="bcid">
    <!--盛放扫描控件的div-->
</div>

<div class="mui-bar mui-bar-footer" style="padding: 0px;">
    <div class="fbt" onclick="scanPicture();">从相册选择二维码</div>
    <div class="fbt mui-action-back">取　 消</div>
</div>

<script type="text/javascript">
  scan = null;//扫描对象
  mui.plusReady(function () {
    mui.init();
    startRecognize();

    var height = window.innerHeight + 'px';//获取页面实际高度
    var width = window.innerWidth + 'px';
    document.getElementById("bcid").style.height= height;
    document.getElementById("bcid").style.width= width;
  });

  function startRecognize(){
    try{
      var filter;
      //自定义的扫描控件样式
      var styles = {frameColor: "#29E52C",scanbarColor: "#29E52C",background: ""}
      //扫描控件构造
      scan = new plus.barcode.Barcode('bcid',filter,styles);
      scan.onmarked = onmarked;
      scan.onerror = onerror;
      scan.start();
      //打开关闭闪光灯处理
      var flag = false;
      document.getElementById("turnTheLight").addEventListener('tap',function(){
        if(flag == false){
          scan.setFlash(true);
          flag = true;
        }else{
          scan.setFlash(false);
          flag = false;
        }
      });
    }catch(e){
      alert("出现错误啦:\n"+e);
    }
  };
  function onerror(e){
    alert(e);
  };
  function onmarked( type, result ) {
    var text = '';
    switch(type){
      case plus.barcode.QR:
        text = 'QR: ';
        break;
      case plus.barcode.EAN13:
        text = 'EAN13: ';
        break;
      case plus.barcode.EAN8:
        text = 'EAN8: ';
        break;
    }
    alert( text + " : "+ result );

  };

  // 从相册中选择二维码图片
  function scanPicture() {
    plus.gallery.pick(function(path){
      plus.barcode.scan(path,onmarked,function(error){
        plus.nativeUI.alert( "无法识别此图片" );
      });
    },function(err){
      plus.nativeUI.alert("Failed: "+err.message);
    });
  }

</script>
</body>
</html>